A model of fuel combustion process in the marine reciprocating engine work space taking into account load and wear of crankshaft-piston assembly and the theory of semi-Markov processes

• Autorzy: Girtler J.

Identyfikatory

DOI

10.1515/pomr-2016-0031

• Języki publikacji: EN

Abstrakty

EN

The article analyses the operation of reciprocal internal combustion engines, with marine engines used as an example. The analysis takes into account types of energy conversion in the work spaces (cylinders) of these engines, loads of their crankshaft-piston assemblies, and types of fuel combustion which can take place in these spaces during engine operation. It is highlighted that the analysed time-dependent loads of marine internal combustion engine crankshaftpiston assemblies are random processes. It is also indicated that the wear of elements of those assemblies resulting from their load should also be considered a random process. A hypothesis is formulated which explains random nature of load and the absence of the theoretically expected detonation combustion in engines supplied with such fuels as Diesel Oil, Marine Diesel Oil, and Heavy Fuel Oil. A model is proposed for fuel combustion in an arbitrary work space of a marine Diesel engine, which has the form of a stochastic four-state process, discrete in states and continuous in time. The model is based on the theory of semi-Markov processes.

Słowa kluczowe

EN

engine load; marine internal combustion engine; probability; semi-Markov process; crankshaft-piston assembly

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2016
• Tom: nr 3
• Strony: 50--57
• Opis fizyczny: Bibliogr. 17 poz., rys.

Twórcy

autor

Girtler J.

• Gdańsk University of Technology 11/12 Narutowicza St. 80 - 233 Gdańsk Poland

Bibliografia

• 1. Bielaczyc P., Merkisz J., Pielecha J.: Thermal state of the internal combustion engine vs. emission of harmful compounds (in Polish). Wydawnictwo Politechniki Poznańskiej, Poznań 2001.
• 2. Brun R.: High-speed Diesel engines (in Polish). WKiŁ, Warszawa 1973. Data on original edition: Science et Technique du Moteur Diesel Industriel et de Transport. Copyright by Societe des Editions Technip et Institut Francais du Petrole, Paris 1967.
• 3. Gichman I.I, Skorochod A.W.: Introduction to the theory of stochastic processes (in Polish). PWN, Warszawa 1968.
• 4. Girtler J.: Valuation method for operation of crankshaftpiston assembly in combustion engines in energy approach. Journal of POLISH CIMAC. - Vol. 6, no. 1 (2011), s. 89-98.
• 5. Girtler J.: Stochastic model of Diesel engine load spectrum (in Polish). Zagadnienia Eksploatacji Maszyn. PAS Quarterly, No. 1/97, 1994.
• 6. Girtler J.: Physical aspects of application and usefulness of semi-Markov processes for modeling the processes occurring in operational phase of technical objects. Polish Maritime Research, Vol. 11, No 3, September 2004.
• 7. Girtler J.: Controlling the process of marine internal combustion engine operation based on the diagnostic decision-making model (in Polish). Zeszyty Naukowe AMW, nr 100A, Gdynia 1989.
• 8. Girtler J.: Usefulness of semi-Markov processes as model of the operation processes for marine main engines and other machines of ship power plants. Journal of Polish CIMAC. Vol. 9, No 2, 2014, pp. 57 – 67.
• 9. Girtler J.: Issue of changes in technical states of a Diesel engine as the results of wear of its tribological systems. Zeszyty Naukowe Akademii Morskiej w Szczecinie, 31 (103), 2012., s. 77-82.
• 10. Grabski F.: Theory of semi-Markov processes of technical objects maintenance (in Polish). Zeszyty Naukowe AMW, nr 75A, Gdynia 1982.
• 11. Kozłowiecki H.: Bearings in reciprocal internal combustion engines (in Polish). Warszawa, WKiŁ 1982.
• 12. Merkisz J., Waligórski M., Babiak M., Kniaziewicz T.: Analysis of marine combustion engine processes with vibroacoustic methods for environment protection strategy. Combustion Engines No 2/2013 (153), pp. 28-39.
• 13. Piotrowski I., Witkowski K.: Maintenance of marine internal combustion engines (in Polish). AM, Gdynia 2002.
• 14. Rozanov Ju.A.: Stacionarnye slučajnye processy. Fizmatgiz, Moskva 1963.
• 15. Wajand J.A.: Diesel engines (in Polish). WNT, Warszawa 1988.
• 16. Wiśniewski S.: Technical thermodynamics (in Polish). WNT, Warszawa 1995.
• 17. Włodarski J.K.: Reciprocal internal combustion engines. Tribological processes (in Polish). WKiŁ, Warszawa 1981.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.